Slab construction



June 6, 1933. E, R SAUNDERS 1,912,920

SLAB CONSTRUCTION Filed Nov. 29, 1929 Eowmzo RSAUNDERfi INVENTOR ATTORNEY Patented June 6, 1933 or, the like are suspended from beams, ,ers or other structural elements,

to improve upon i t e Paten to June 1%, 1927. patent a building construction using precast 'slabs v having metallic reinforcements em- -.bedded therein.

"to overlap when .cent each other. 7

iruNi-TED STATES PATENT OFFICE pp' a'npjn. swarms, or oirA'rmANooeA, TENNESSEEQASSIGNOR r0 STRUCTURAL Y ZGYYPSUM ooRronA'rIoiv, or LINDEN, new

JERSEY; A CORPORATION or DELAWARE SLAB CONSTRUCTION Application filed Ifovember 29, 1929. Serial 110,410,415.

invention relates to a building: construction. in whichprecast slabs of set plastic material such as gypsum, cement gird- The principal objectof the invention is Rowan No. 1,632,453, dated There is disclosedin that These reinforcements proj ect from the ends of the slabs and are adapted slab ends are placed adja- Each slab is provided with I a recess to accommodate the end of the re- .inforcement in the adjacent slab. In erectv,ing a ceiling from slabs of the Rowan construction, it is necessary to offset one slab with relation itO its: opposing neighbor the thickness of a reinforcing rod, due to the fact that the ends of the rods must overlap. If this offset is continued uniformly no difficulties arise but it frequently occur sthat a workman will offset a slab in one row to the right and the slab to the left, opposite, in an adjacent row, with the result that there is a space or gap between the sides of adjacent slabs equal to twice the thickness of a reinforcing rod, and this is undesirable.

To this end the invention contemplates the use of a precast slab having a reinforcement embedded therein, which reinforcement shall terminate short of the end of the slab and eX- i tend within a recess in the slab so as to expose a portion thereof. Adjacent slabs are erected in directly opposed position and the gap between the ends of opposed reinforcements in adjacent slabs is bridged by a sleeve or other joining means. A hanger connected in any desired manner to the beam engages this sleeve or connecting element and the two slabs are thus suspended below the beam.

The invention further consists in the novel arrangement, construction and combination of parts more fully hereinafter described and shown in the accompanying drawing.

In the drawingi Fig. l is a sectional elevation of a building the construction disclosed trated- I have shown two precast slabs 1,

construction showing an embodiment of the invention, v i V Fig. 2 is' a plan view, partly in section, of the adjacent ends of two slabs, and

, ig, 3ois a. perspective View of a connecting T element.

Referring now to the embodiment illusformed of gypsum or the like, carrying embedded therein reinforcing rods 2. The ends :3 ofthese rods terminate short of the end of the, slabs within which they are embedded,

and are exposed within a recess or cavity 4. 1

7 A connecting element'is provided which may consist of atubular section or sleeve 5,

which in this particular instance conforms to the cross-sectional shape of a reinforcing rod. Obviously, this is not necessary as it may be desirable to simply use a section of round tubing. The sleeve 5 is adapted to be slipped over the ends of the rods in adjacent slabs as shown, in Fig. 2 so thatitherods are made continuous and are directly opposed to each other making unnecessary the offsetting of the slabs. I I

A hanger shown at 6 provided with an aperture near the bottom thereof through which the sleeve 5 is. slipped, a notch? atthe bottom of the sleeve is engaged by the lower 7 I I part of the hanger and insures the proper pow sitioning of the hanger, preventing ,undue rnovement lthereof during erection. The hanger shown, is adaptedto be bent as at 8, over the top of the beam or girder, 9.

, difiiculty due to offsetting slabs in the wrong direction is entirely obviated due tothe fact thatvthe reinforcements terminate short of 1the'ends of the slabs, yet by inserting the ends in the sleeve or connecting element a substantially continuous reinforcement is made from endto end of the series of slabs. additionlto the above, advantage it will be apparent that the present form ofslab adapts itself more readily to shipment than the Rowan slab above referred to, inasmuch as stacks or piles of the slabs may be packed closely together without any projection on one slabmutilating or interfering with its neighboring slab.

It will be perfectly apparent that it may be desirable in some instances to construct the hanger and the connecting sleeve as a single element rather than as independent elements such as is shown.

While the invention has been shown with particular reference toa specific form of slab connecting element and hanger, yet obviously I do not wish to be limited strictly thereto as .the invention is to be construed only by the scope of the claims appended hereto.

'What Iclaim is:

' 1. In a building construction, a beam, precast slabs suspended below the same, each slab having a reinforcement embedded therein, a portion of the reinforcement being eX- posed, the reinforcement in adjacent slabs bein g inalignment, a sleeve joining the reinforcements in adjacent slabs, and a hanger for suspending the slabs below the beam.

2. In a building construction, a beam, precast slabs suspended below the same, each slab having a reinforcement embedded therein, a portion of the reinforcement being eX- posed, the reinforcement in .adjacent slabs being in alignment, a sleeve joining the reinforcements in'adjacent slabs, and a hanger engaging the sleeve and the beam.

3. In a building construction,.a beam, precast slabs suspended below the same, each slab having a reinforcement embedded therein, the reinforcement terminating short of the. end .ofv the slab and being exposed therein, the reinforcement in adjacent slabs being inalignmenua sleeve joining the ends of the reinforcements inadj acent slabs, and a hanger engaging the sleeve and the beam.

4. Ina building constructioma beam, precast slabs suspended below the same, each slab having a reinforcement embedded therein,the reinforcement terminating short of the end of the slab and being exposed, means j'oining'the aligned opposed ends of adjacent reinforcements, and a hanger engaging the joining means and the beam.

5. Ina building construction, a beam, precast slabs suspended below the same, each slab havinga reinforcement embedded therein, the reinforcement terminating short of the'end of the slab and being exposed, means joining the'aligned opposed ends of adjacent reinforcements, and a hanger engaging the joining means and the beam, the joining means being provided with means to prevent accidental displacement of the hanger.

6. "In a building construction, a ceiling supporting element, precast slabs suspended V therefrom andbelow the same, each slab having a reinforcement embedded therein, a joining element connecting the reinforcements in adjacent slabs, and a hanger engaging the ceiling supporting element and the joining element.

7 In a building construction,: a ceiling supporting element, precast slabs suspended therefrom and below the same, each slab having .a reinforcement embedded ,therein and in line with the .rein'forcementiimfthe adj acent'slab, joining means connecting the ends-of'the reinforcements in adjacent slabs, and a hanger engaging the ceiling supporting element and the. joining element.

8. In a building construction, a ceilin supporting element, precast-slabs suspende therefrom and below thesame, -eachslab having a reinforcement embedded therein, a

joining element telescopicallyconnecting the ber 1929.

EDWARD SAUNDERS. 

